The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
May. 21, 2019
Applicant:
Elenion Technologies, Llc, New York, NY (US);
Inventors:
Kishore Padmaraju, New York, NY (US);
Ruizhi Shi, New York, NY (US);
Yangjin Ma, Brooklyn, NY (US);
Matthew Streshinsky, New York, NY (US);
Assignee:
Elenion Technologies, LLC, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/50 (2013.01); G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
H04B 10/50575 (2013.01); G02F 1/0123 (2013.01); H04B 10/5053 (2013.01);
Abstract
A semiconductor-based Mach-Zehnder modulator (MZM) is configured for push-pull bias dithering to control the MZM bias at a desired set point. When two such MZM modulators are connected in parallel to form an IQ modulator, bias settings for both MZMs and the IQ bias may be controlled from an output of the IQ modulator to minimize both the IQ offset and the quadrature error of the output signal constellation even for non-ideal MZMs with low extinction ratios.